Transfer assembly



June 5, 1962 J. A. BLAIR 3,037,795

TRANSFER ASSEMBLY FiledSept. 2a, 1958 INVENTOR.

3,037,795 TRANSFER ASSELY John A. Blair, Pleasant Ridge, Mich, assignor to Port Huron Snlphite & Paper (10., Port Huron, Mich, a corporation of Michigan Filed Sept. 23, 1958, Ser. No. 762,783 1 Claim. (Cl. 282-42) The present invention relates to transfer assemblies and more particularly to transfer assemblies of the type shown in FIGURE 2 of Kerr Patent No. 2,557,875 in which a single sheet of one-time transfer or carbon paper is attached by a weak adhesive to the face of a copy sheet in offset relation so that the respective sheets may be grasped at opposite ends to effect separation. These assemblies are widely used in making multiple typewritten copies of correspondence, etc., any desired number of the two-sheet assemblies being combined with an unattached original sheet.

Transfer assemblies of the Kerr type have the advantage that they are made of rectangular copy sheets of standard sizes and shapes without notched corners or perforated stubs and also because the carbon or transfer sheets are formed of simple rectangular shapes having no notches or perforations. The two sheets in the assembly, while offset in opposite irections for easy separation, are capable of being jogged in order to line up a p-lu rality of assemblies by tapping the top edges of the original and copy sheets on a table or other surface prior to insertion into the typewriter in accordance with the conventional practice of typists.

It is the general object of the present invention to provide an assembly of the type above described having all of the foregoing advantages, but being less costly and so constructed that the transfer and copy sheets may be separated at the top for erasure while the assemblies are in a typewriter without breaking the adhesive connection.

In the drawings:

FIGURE 1 is a plan view showing an assembly of the present invention; and

FIG. 2 is an exploded view showing the combination of one of the transfer assemblies of the present invention positioned in the relationship to an original sheet which it occupies during typing.

The assembly of the present invention comprises a copy sheet 1 which is of standard rectangular form and a rectangular sheet of one-time transfer or carbon paper 2 which is provided at its lower edge with an uncoated margin 3, the remainder of the underside of the transfer sheet 2 being provided with the usual carbon coating 4 of the type commonly employed in one-time transfer or carbon papers.

The two sheets land 2 are detachably secured together by a relatively small quantity of weak adhesive which is applied to permanent parts of the sheets as indicated by the three spots 5. The adhesive employed for this purpose may be that commonly used in assemblies of this type. It has sufficient adhesive strength to hold the two sheets in juxtaposition, but permits them to separate easily when they are pulled in opposite directions parallel to the planes of the two sheets and the separation occurs without tearing either sheet or leaving noticeable spots of adhesive on the copy sheet 1.

It will be noted that the adhesive spots 5 are positioned near the upper portion of the uncoated margin 3 of the transfer sheet and engage the lowermost portion of the copy sheet 1 so that a portion of the uncoated margin 3 projects below the bottom edge of the copy sheet.

Patented June 5, 1962 The entire upper edge 6 of the transfer sheet 2 terminates below the top edge of the copy sheet 1 by at least a sufficient distance to permit gripping of the copy sheet at its top edge by the fingers Without engaging the transfer sheet.

It will be noted that the carbon coating 4 extends all the Way to the top edge 6 of the transfer sheet and that, consequently, the top edge 6 may be positioned an even greater distance from the top edge of the copy sheet than is possible with the type of transfer assemblies shown in Kerr Patent No. 2,557,875, because there is no need for an uncoated margin at the top of the transfer sheet and, normally, a substantial portion of the upper part of the copy sheet 1 receives no written material. This permits a saving of both paper and carbon coating material.

In use, the assembly shown in FIG. 1 is positioned in the manner indicated in FIG. 2 relative to an original sheet 7 which is of the same size and shape as the copy sheet 1. With each original sheet 7, which may comprise an ordinary letterhead, any desired number of the assemblies shown in FIG. 1 may be employed, only one being shown in FIG. 2. When the desired number are placed in approximately the proper relative position, they then may be inverted and their top edges tapped on a table or other surface to make sure that all of the copies and original sheets are properly aligned. The assembly may then be inserted in the typewriter. During typing, if an occasion arises to make an erasure, it is only necessary to turn the typewriter roll back slightly and separate the sheets at their tops which are entirely free of each other.

What is claimed is:

A transfer assembly of the type comprising a sheet of one-time transfer paper and an attached copy sheet adapted to be used with an unattached original sheet of the same size and shape as the copy sheet, the transfer sheet having a carbon coating on one side thereof, the carbon-coated side of the transfer sheet having as a permanent part thereof an uncoated strip extending entirely across the full width of the same at the bottom edge thereof, and a weak adhesive located between and adhering to said uncoated strip of the transfer sheet and to a permanent portion of the copy sheet at positions upon a line extending along and adjacent to the bottom edge of the copy sheet, said weak adhesive detachably connecting the sheets with the carbon coating on the transfer sheet facing the copy sheet, the copy sheet and the transfer sheet being unitary rectangular sheets free of any areas weakened to such a degree as would permit tearing thereof by a force less than that required to separate the sheets at said adhesive, a full-Width portion of said uncoated strip of the transfer sheet projecting below the entire bottom edge of the copy sheet to form a pull por tion on said transfer sheet located below said adhesive, the entire top edge of the transfer sheet terminating below the top edge of the copy sheet, and the transfer sheet being free of any attachment to the copy sheet except when connected thereto by said weak adhesive.

References fitted in the file of this patent UNITED STATES PATENTS 1,849,715 l-lopp Mar. 15, 1932 2,606,034 Stevens June 25, 1935' 2,263,435 Brenn Nov. 18, 1941 2,341,788 Jones Feb. 15, 1944- 2,400,356 Kerr et al May 14, 1946 2,557,875 Kerr June 19, 1951 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,037,795 June 5, 1962 John A. Blair n the above numbered pat- It is hereby certified that error appears 1 nt should read as ent requiring correction and that the said Letters Pate corrected below Column 2, line 58, for "when" read where Signed and sealed this 11th day of September 1962.

(SEAL) Attest:

DAVID L. LADD Commissioner of Patents ERNEST W. SWIDER Attesting Officer 

